40576945 has 20 divisors (see below), whose sum is σ = 52660980. Its totient is φ = 29979488.

The previous prime is 40576937. The next prime is 40576961. The reversal of 40576945 is 54967504.

It can be written as a sum of positive squares in 2 ways, for example, as 17909824 + 22667121 = 4232^2 + 4761^2 .

It is not a de Polignac number, because 40576945 - 2³ = 40576937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40576898 and 40576907.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1399191 + ... + 1399219.

It is an arithmetic number, because the mean of its divisors is an integer number (2633049).

Almost surely, 2^40576945 is an apocalyptic number.

It is an amenable number.

40576945 is a deficient number, since it is larger than the sum of its proper divisors (12084035).

40576945 is an frugal number, since it uses more digits than its factorization.

40576945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126 (or 57 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 40.

The square root of 40576945 is about 6370.0035321811. The cubic root of 40576945 is about 343.6316167556.

The spelling of 40576945 in words is "forty million, five hundred seventy-six thousand, nine hundred forty-five".